US 12,380,918 B1
Energy-assisted recording head with C-shaped delivery waveguide core
Chubing Peng, Eden Prairie, MN (US)
Assigned to Seagate Technology LLC, Fremont, CA (US)
Filed by SEAGATE TECHNOLOGY LLC, Fremont, CA (US)
Filed on Feb. 15, 2024, as Appl. No. 18/442,380.
Int. Cl. G11B 5/00 (2006.01); G11B 5/147 (2006.01)
CPC G11B 5/1475 (2013.01) [G11B 2005/0021 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A recording head, comprising:
a near-field transducer proximate a media-facing surface of the recording head, the near-field transducer comprising a plate-like, enlarged part with a peg extending from the enlarged part; and
a light delivery waveguide extending from an energy source to the near-field transducer, the light delivery waveguide comprising, proximate the near-field transducer:
a C-shaped core of a first dielectric material, the C-shaped core having a hollow aligned with the near-field transducer; and
a cladding of a second dielectric material that surrounds the C-shaped core.